Lung Nodules - Differential Diagnosis by Distribution
• Centrilobular: Hypersensitivity Pneumonitis, RB-ILD, Pneumoconiosis, Infectious Bronchiolitis, Vasculitis, Diffuse panbronchiolitis
• Perilymphatic: Sarcoidosis, Silicosis, Amyloidosis, LIP, Lymphangitis Carcinomatosis
• Random: Metastasis, Infectious (viral, TB, fungal), Septic emboli, LCH
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